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Finding the Fourth Proportional to 684,609.98, 945,728.13 and 623,253.69

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Solution

The fourth proportional to 684,609.98, 945,728.13 and 623,253.69 is: 860,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,609.98 : 945,728.13 = 623,253.69 : x
  2. Step 2: Convert to fraction form
    684,609.98/945,728.13 = 623,253.69/x
  3. Step 3: Cross multiply
    684,609.98x = 945,728.13 × 623,253.69
  4. Step 4: Simplify right side
    684,609.98x = 589,428,546,759.30
  5. Step 5: Solve for x
    x = 589,428,546,759.30/684,609.98
  6. Step 6: Final answer
    x = 860,969.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.